Convert GLB to OBJ
GLB to OBJ, converted in your browser and written with a real MTL file and its textures alongside — not the geometry-only OBJ most converters produce.
What breaks when you convert GLB to OBJ
This is the most lossy conversion we publish, and the report will show it
glTF describes a surface with base colour, metallic, roughness, normal, occlusion and emissive maps. MTL has slots for a diffuse colour, a specular colour, an exponent and a handful of texture references. Most of that PBR description has nowhere to go: we write the base colour and its texture, and the maps that give a modern material its character are simply absent from the target format.
The scene graph is flattened away
A GLB can carry a full hierarchy of nodes with their own transforms — an assembly with parts positioned relative to one another. OBJ has no scene graph at all, so every transform is resolved into the vertex positions and the structure disappears. The model looks identical and is no longer possible to take apart the same way.
Animation is gone entirely
OBJ has no concept of time. Any animation in the GLB, skinned or otherwise, is dropped and you receive the model in its current pose. If the GLB was animated, this format is the wrong destination.
Metres become bare numbers
glTF is defined in metres, which means the source file genuinely knows its own scale. OBJ cannot record that, so the information is lost in transit and whatever opens the file next will guess. Choose the output units deliberately here, because it is the last point at which the scale is unambiguous.
Questions
- Do I get the textures as well?
- Yes. Textures embedded in the GLB are extracted and written alongside the OBJ and MTL. Download all the files and keep them together.
- Why does the material look flat compared to the GLB?
- Because MTL cannot express metalness, roughness or normal maps. What you are seeing is the base colour without the maps that made it look like a real material.
- Does this handle Draco-compressed GLB files?
- Yes. Draco geometry is decompressed automatically before conversion, so compressed files work exactly like uncompressed ones.
- Would GLB to STL be better for 3D printing?
- Yes, if printing is the goal. STL is geometry only, which is all a slicer wants, and it avoids carrying materials you cannot use.